People always make various vows at their most desperate moments, longing for help, because the current predicament has made it difficult for them to think rationally, and at this time they have no bargaining chips to speak of. Once they escape the predicament, when they regain control and the right to choose, they no longer kneel and beg others; at this point, defending their dignity and safeguarding their interests become the priorities. Coupled with greed, it becomes difficult to let go of the benefits already gained.